Version 1.9.1 of Semantic MediaWiki is the next release after SMW 1.9.0. It is a minor release that brings many stability improvements and enhancements, as well as some new features. All changes from the 1.9.0.1 and 1.9.0.2 patch releases, which are listed below, are also included.

Please refer to the help page on installing Semantic MediaWiki to get detailed instructions on how to do this.